The announcement didn't mention anything about PTN either way, so at this point, I'd be inclined to guess that it probably won't be back because DL isn't going to need anything to increase their attendance.
As mentioned, they did add more decorations to DCA. Primarily on Buena Vista Street, in Carsland, and over in Paradise Garden area. They did add overlays to Mater's and Luigi's (which is mostly just Halloween sounding music - nothing as major as HMH) and they introduced an "After Dark" version of GotG. I have some photos from DCA in 2018 in
my on-going trip report thread. Maybe they'll introduce even more decorations (it would be nice if there were elements added to Pixar Pier, the Airfield, and Hollywood Land areas).